Santorini Earthquake Swarm Subsides, Shifts Southwest

07:36 17/2/2025 - Πηγή: iEfimerida

Seismic activity near the Greek island of Santorini has gradually decreased in frequency, accompanied by a slight shift southwestward, according to the National and Kapodistrian University of Athens (EKPA).

Since a swarm of earthquakes

began on Jan. 26, 2024, EKPA’s Seismological Laboratory has recorded more than 19,200 quakes, including over 16,900 with a magnitude of 1.0 or greater.

The data was collected using strict quality control and machine learning.

On Feb. 14, more than 750 earthquakes were recorded, including about 100 with a magnitude of 2.5 or greater, and three with a magnitude of 4.0. The strongest quake that day measured 3.9.

By Feb. 15, the number of recorded quakes had dropped to 94, with none exceeding a magnitude of 4.0. Two of the strongest tremors on Feb. 15, both measuring 3.9, occurred at 5:37:43 a.m. and 9:12:50 a.m. local time.

The seismic activity remains concentrated southwest of Anydros, with a tendency to migrate further southwest. This shift is linked to a minor swarm observed on Feb. 14 between approximately 8 p.m. and 10 p.m. local time, similar to previous swarms since Jan. 26.

No such swarm was observed on Feb. 15.

EKPA’s Seismological Laboratory continues to monitor the situation closely, using advanced analysis methods.

While the decrease in earthquake frequency is a positive sign, the ongoing shifts in seismic patterns highlight the dynamic nature of the area’s tectonic activity.

Authorities and residents remain vigilant.

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Santorini Earthquake Swarm Subsides Shifts Southwest,